Thanks for the information and suggestion of trying a bit of gas to see what happens. The carb on this is sideways and about halfway down the side of the engine, rather than on the top. I'll have to figure out how to inject gas. Previously, I needed to get things going with starting fluid but that doesn't seem to be helping more than a bit. I can tell it's igniting but no sustain. I'm going to go through the propane system from back to front to make sure all the propane components are doing what they should as well as a double-check of the cooling lines to make sure the vaporizer isn't freezing up. Also, I'll be replacing the points with a pretronix electronic ignition as word is these give a little more spark energy which propane needs. I have to double check the wiring to the solenoids that control propane flow: Wiring is very old and brittle in places so there may be a hidden break. One more weird question that hopefully someone will answer: The shift lever is completely loose. That is, it will fall into whatever gear by vibration or gravity (all gears work fine). Are their normally springs somewhere in the transmission (base of the shifter?) that keep these generally in place until manually moved? Is it some other system? This tranny has a large bolt-on plate that the shift lever passes through....what can I expect if I pull the plate and am I likely to be able to give a simple fix to the looseness of the lever through this portal? Thanks again